Securitron XDT_Series - Manual (Page 3)

PN# 500-14900
Page 3 Rev. D, 06/11
and limit use to certain occupancy types. These details do not affect how the XDT board is
configured so they are beyond the scope of this manual. We recommend strongly, however,
that the end user assure himself that his occupancy and fire detection system qualify
to support delayed exit in his local area.
These exit delay timers have only been evaluated by UL for use in the EXD-1 and EXD-1F FWAX
systems.
3.1 NFPA 101 (SPECIAL LOCKING ARRANGEMENTS)
This code by the National Fire Protective Association was the first implementation of delayed
exit. It formed the basis for the different model code versions which follow and is still used in
many specifications.
NUISANCE DELAY: Permitted up to 3 seconds.
RELEASE DELAY: 15 seconds or extension to 30 seconds with local approval.
RELOCKING: Must be "manual". This is generally interpreted to mean that a doorswitch can not
be used for relocking. A keyswitch is the typical technique used.
POWER: The door must release when DC power to it is cut off. This means that battery backup
of the system power supply can be considered acceptable, but this is a point to confirm with the
local authority.
3.2 STANDARD BUILDING CODE
NUISANCE DELAY: Not allowed.
RELEASE DELAY: 15 seconds or extension to 30 seconds with local approval.
RELOCKING: Must occur only when the door opens. A doorswitch rather than a keyswitch must
be used.
POWER: The door must release when DC power to it is cut off. This means that battery backup
of the system power supply can be considered acceptable, but this is a point to confirm with the
local authority.
3.3. UNIFORM BUILDING CODE
NUISANCE DELAY: Required and must be set at 2 seconds.
RELEASE DELAY: 15 seconds only.
RELOCKING: Must be "manual" and must be located at the door. This is generally interpreted to
mean that a doorswitch can’t be used for relocking. A keyswitch is typical.
POWER: The door must release when power to it is cut off. The door must also release if power
to the smoke detection system or exit illumination system is lost. This is generally accomplished
by using the same line voltage source to operate the lock power supply as operates the smoke
detection and exit illumination systems. Battery backup for the locks is normally excluded.
3.4 BOCA
NUISANCE DELAY: Required and must be set at 1 second.
RELEASE DELAY: 15 seconds or extension to 30 seconds with local approval.
RELOCKING: A doorswitch must be used and a special type of timed relocking is required. After
the release delay expires, the lock releases. When the door is opened, the doorswitch changes
state but nothing happens immediately (the lock remains released). When the door recloses, a
"relock delay" of 30 seconds begins. If the door is not opened again during this 30 second
period, it will relock. If it is opened again, the 30 second relock delay will begin again on door
closure. The door will only relock when it has been left undisturbed for 30 seconds after
reclosure. The local authority may extend the relock delay to 45 seconds for sensitive facilities.
The standard XDT board supports the BOCA 30 second relock sequence. If the 45 second relock
sequence is required, contact the factory to receive a modified board.
POWER: The door must release when power to it or to the building is cut off. Battery backup of
the lock power supply is therefore specifically excluded.